Peter, Susan, Edmund, and Lucy go to live out in the country with a rich man, Professor Kirke, during the war. They decide that they want to explore the vast lands of the estate, but settle for exploring the massive house during a rain storm. They find an empty room with a wardrobe that catches Lucy's attention. She goes inside and finds a new snowy, wooded world. She meets a fawn (satyr) named Thomnas and he invites her for tea. However, after Lucy has been in the fawn's dwelling for some time, he admits that he was going to give her up to the White Witch, who is constantly searching for humans. His change of heart prompts him to escort Lucy back to her own world. Upon returning, Lucy finds that she was not missed because in her world, she was only gone a minute.
Soon after, the children are playing hide and seek and Lucy finds herself running out of time to hide. She goes into the wardrobe and ends up back in Narnia, visiting Thomnas. Edmund, seeing the wardrobe, decides to go in after Lucy. He ends up in Narnia and meeting the White Witch, Jadis, who fancies herself a queen. She tells Edmund that she will reward him handsomely if he brings his brothers and sister to her palace. Before leaving Narnia, Edmund and Lucy meet. Lucy is excited about Edmund finding the world because now the others would believe her. However, Edmund lies and says they were just pretending.
While trying to stay out of the way of visitors, the children find themselves all in the wardrobe, and eventually, in Narnia. They go to visit Thomnas only to find that he has been arrested by the White Witch. They start their journey to rescue him, and Edmund slips while giving directions, proving that he had been in Narnia before. The children receive the help of a friendly beaver couple, who tell them what they need to know about the land of Narnia. They speak of the great Aslan, the evil White Witch, and the constant winter that shouldn't be. It's not long before they realize that Edmund is missing. Peter suggests that they go look for him, but the Beavers already know where he went: to see the White Witch. They realize that Edmund got a lot of information from them and they decide to leave as quickly as possible.
Edmund arrives at the house of the White Witch expecting praise for bringing his siblings into Narnia. However, the witch is displeased because Edmund did not bring them to her directly. She sets off on the sleigh to find the other children, taking Edmund with her.
Peter, Susan, and Lucy travel with Mr. and Mrs. Beaver. They find a safe place to rest for the night, but it's not long before they hear sleigh bells and start to worry. Mr. Beaver goes to check it out and informs them that it is safe to come out of hiding. The emerge from the cave to find Father Christmas. He gives Peter a sword and shield, Susan a bow and arrow and horn, Lucy a potion. They continue on to meet Aslan at the stone table.
The White Witch's sledge comes to a stop. The snow is melting, making travel impossible in the sleigh. She demands that Edmund be killed to prevent the prophecy from coming true and they start walking to the stone table, not only to meet Aslan, but that is where the sacrifice is to be made. Edmund is able to escape
The children and the beavers make it to the stone table to find many animals gathering. Aslan is there and knights Peter. Susan is attacked by wolves and Peter rescues her using his sword. Edmund arrives and receives forgiveness from Aslan and his siblings. However, the White Witch appears and stakes her claim on betrayers. Aslan makes a deal to save Edmund.
Later that night, Lucy and Susan cannot sleep. They start wondering around the camp and see Aslan looking sad and heading in the forest. They follow him, and he lets them walk by his side as long as they promise to stop where he tells them and to keep themselves hidden. The witch and her minions appear to complete the deal. The two girls watch as Aslan is tied up and shaved. Eventually, he is killed. However, when the sun comes up, he is alive again with all of his fur back.
Aslan takes Susan and Lucy to the witch's house and frees all of the creatures that have been turned to stone, including a giant. After the giant has knocked down the entire palace dedicated to the witch, the entire group goes to help Peter and Edmund with the war that is being waged against the witch. The Narnians win the war and Lucy uses her vial to help those that were wounded. The Narnians lead the way to Cair Paravel for the coronation of the kings and queens.
The kings and queens grow up and live out their lives as just rulers. One day, while chasing a white stag that is supposed to grant a wish when caught, they see a lamp post in the woods. They end up walking through some brush until they come out of the wardrobe that started the entire journey. No time has passed in their real world, and they are back to their original ages. They tell the professor about their strange journey. He tells them that they may return to Narnia someday, but not through the wardrobe.
The Chronicles of Narnia:
The Lion, The Witch, and the Wardrobe
The Voyage of the Dawn Treader
The Silver Chair
The Horse and His Boy
The Magician's Nephew
The Last Battle